Mike Krzyzewski is really a famous coach of Dream Team. She has coached north america men's basketball team for some time, that's clinched numerous medals for his country. Following London Olympic was over, Krzyzewski told The Associated Press that this game will be his final one as national coach, a job he's held for seven years. He had left open the possibility of staying with the team beyond the London Games, when practice on Saturday said these will be his last Olympics.When asked if he was sure, Krzyzewski didn't hesitate before again saying, "yes," this will be his last game "If we could win it, then it might be three major championships in a row, i always do not know when that has been done because we haven't usually won the globe championships," Krzyzewski said. "It becomes an enormous thing for the program." Whatever, he's an awesome coach. His achievement are going to be remembered by the country.

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人民电气介绍低压成套开关设备的分类

2020/8/5 10:09:15      点击:
额定电压为1000V及以下的低压成套开关设备一般分为三类:
    (1) -级配电设备统称为动力配电中心,集中安装在企业的变电站,将电能分配给安装在不同地点的下级配电设备,个别重要负荷可直接由一级配电设备供电。由于设备紧靠降压变压器,对设备供电的电气参数要求较高,输出电路容量较大。
    (2)二级配电设备为动力配电柜和电动机控制中心的统称。动力配电柜使用于负荷比较分散、回路比较少的场合,电动机控制中心使用于负荷集中、回路较多的场合,将上一级配电设备某一电路的电能分配给就近的负荷。这级设备应对负荷提供保护、监视和控制。
    (3)末级配电设备统称为照明配电箱,它是远距离供电中心分散的小容量配电设备,对小容量负荷进行保护、监视和控制。
    按设备的结构特征分,可分为固定面板式、封闭式和抽出式成套开关设备三大类。